forEachNode method

void forEachNode(void visit(int node, Matrix4 modelFromNode))

Calls visit for every node of the shown scene, parents first, with its transform relative to the model's root.

Implementation

void forEachNode(void Function(int node, Matrix4 modelFromNode) visit) {
  void walk(int index, Matrix4 parent) {
    final node = nodes[index];
    final world = parent.multiplied(node.local);
    visit(index, world);
    for (final child in node.children) {
      walk(child, world);
    }
  }

  for (final root in roots) {
    walk(root, Matrix4.identity());
  }
}